25795 2014-05-19 07:01:56 +0000 <img> error/loadend are always simple events 2014-06-16 10:50:06 +0000 1 1 1 Unclassified WHATWG HTML unspecified Other other RESOLVED FIXED http://www.whatwg.org/specs/web-apps/current-work/#img-load P3 normal Unsorted 1 contributor ian ian mike zcorpan contributor oldest_to_newest 106308 0 contributor 2014-05-19 07:01:56 +0000 Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/edits.html Multipage: http://www.whatwg.org/C#img-load Complete: http://www.whatwg.org/c#img-load Referrer: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html Comment: error/loadend are always simple events "first fire a simple event named error at the img element and then fire a simple event named loadend at the img element." Why not use progress events for error/loadend here in the same-origin case? Posted from: 210.95.255.149 by simonp@opera.com User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/34.0.1847.116 Safari/537.36 OPR/21.0.1432.48 (Edition Next) 106615 1 ian 2014-05-21 20:23:09 +0000 What would it mean for them to be progress events? 106700 2 zcorpan 2014-05-23 10:18:12 +0000 They would use ProgressEvent instead of just Event. In XHR they use ProgressEvent. <img> seems to switch between ProgressEvent and Event depending on origin, except error/loadend which are always Event. I think they would expose the same information as the last "progress" event. 106736 3 ian 2014-05-23 19:54:20 +0000 Do "error" and "loadend" normally expose the last "progress" event's information? If they do normally do that, then sure... 107842 4 zcorpan 2014-06-16 10:06:22 +0000 Thinking about this some more, it seems simpler and possibly safer to always use Event for error, and not fire 'progress' at all until dimensions are known (it would be confusing anyway to fire 'progress' events for two ongoing fetches in the parallel loading case). 107847 5 zcorpan 2014-06-16 10:50:06 +0000 Fire 'progress' event only for the current request. https://github.com/ResponsiveImagesCG/picture-element/commit/22efd4478d7714ac12fd128ca2c455d0f91f42a4